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2 She:ts-Shet 1. 0. C'OLVIN.

Windmill.

No. 226,036 Patentedv Mar. 30, 1880.

N.YPETERS. FHOTO-UYHOGRAFHER. WASHINGTON. D C.

2 Sheets-Sheet 2.

0,. GOLVIN; Windmill.-

' Patented Mar. 30, 1880.

'11: v I Inn/l: @WW 7 A Witnesses." I

N-FETERS, PNOTO-LITHOGRAFH ER. WISHINGTON. D C.

NITED STATES ORSON GOLVIN, 0F SCHOOLGEAFT, MICHIGAN, ASSIGNOR OFONE-HALF OF HIS RIGHT TO ROMULO A. MILLS, OF SAME PLACE.

Wl-NDMILL.

SPECIFICATION formingpart of Letters Patent No. 226,036, dated March 30,1880.

Application filed January 26, 1880.

To all whom it may concern:

Be it known that I, Oason GoLvIN, of Schoolcraft, in the county ofKalamazoo, and in the State of Michigan, haveinvented certain new anduseful Improvements in WVindmills; and I do hereby declare that thefollowing is a full, clear, and exact description thereof, referencebeing had to the accompanying drawings, and to the letters of referencemarked thereon, making a part of this specification.

The nature of my invention consists in the construction and arrangementof a windmill, as will be hereinafter more fully set forth.

In order to enable others skilled in the art to which my inventionappertains to make and use the same, I will now proceed to describe itsconstruction and operation, referring to the annexed drawings, in which-Figure 1 is a side elevation of my improved windmill. Fig. 2 is a sideview of the vane and upper part of the mill. Fig. 3 is a plan view ofthe turn-table and the devices connected therewith. Fig. 4 is a centralvertical section of the same. Fig. 5 is a vertical section of the upperend of the mill. Fig. 6 is a plan view of the center of the base uponwhich the turn-table rotates.

A represents a circular rim, provided with interior braces or crossbars,B B, and placed over and firmly secured to the top of the derrick of awindmill. In the center, between the interior braces or cross-bars, B,is formed a cup, 0, through the bottom of which projects ahollowcenter-pin or journal, D, of the turn-table.

The turn-table consists of a circular rim, F, with radial braces E, andfrom the center projects downward the hollow center-pin or journal D.Within the cup 0 are placed a number of rollers, a. a, which bearagainst the inner periphery of the cup and the outside of the pin, so asto reduce the friction at the center. The turn-table F is deeply groovedon its under side to form an annularchannel, in which are placed anumber of beveled rollers, b b, which run upon the upper edge of thecircular rim A, the two sides of the annular channel fitting over theupper edge of the rim A, as shown in Fig. 4., to retain the rollers andturn-table in proper place.

The rollers 11 are beveled on their edges and made convex on their outerfaces, so that in traveling around on the track or rim A they will touchthe outer wall of the recess in the turn-table F only at a single pointin the center, and thus reduce the friction to the minimum.

In the turn-table, at one side of the center, is formed a cup, Gr,provided with a cap, H, which has a central orifice with anupwardlyprojecting flange, d, around the same.

1 represents an upright hollow shaft, the lower end of which is solidand formed with a spindle, f, that extends down through the opening inthe cap, and into an aperturein the bottom of the cup G. The lower endof the shaft 1 also forms an inverted cup, 6, which fits over and aroundthe flange cl and forms the lower bearing for the shaft. The upper endof the shaft I forms a cup, J, on top of which is placed a cap. L, heldfirmly in position by means of braces K K connecting with theturn-table. The cap L is provided with a central spindle, h, whichextends down through the cup J into the shaft I, and also with acircularflange, t, which fits around the upper edge of the cup, and thus formsthe upper bearing for the shaft I.

On the shaft I is secured a casting or head, M, in suitable bearingsupon which is placed the shaft m, that carries the wind-wheel N. On theshaft m is an eccentric, n, which operates the rod 11, and said rodextends downward through a clamp-guide, O, fastened to the lower end ofthe shaft 1. The lower end of the rod or pitman p is formed with an eye,through which is passed a curved rod, 8, pro jecting from the inner endof a lever, 1?. The curved rod 8 is made on the are of a circle havingthe axis of the shaft I for the center, for a purpose that will behereinafter explained.

The lever I? is attached to a shaft, t, which has its bearin gs in twooil-boxes, R It, attached to the turn-table F, and covered by suitablecaps. Within each box R the shaft 13 is provided with a pulley, '21, anda band, to, passes over the same. This band passes around a pin orroller, 00, in the bottom of the oil-box and conveys oil up to theshaft, so as to lubricate the hearings on both sides. The outer end ofthe lever P is provided with an adjustable balancing-weight, S. Near theinner end of the lever, on one side, is a projecting stud, 3 on which isplaced the pump-operating rod .2.

In operation the weight S on the outer end of the lever aids in raisingthe pump-rod and balances and equalizes the motion perfectly, and theweight may be adjusted out or in, so as to make the balance even.

One of the braces K is extended, as shown in Fig. 2, and has the vane Tattached to it in a line with the wind-wheel shaft on to keep the wheelin the wind.

To a pin or screw, to, in the clamp O is attached one end of a spiralspring, V, which passes around the clamp and shaft, as shown, and theother end of said spring is attached to the turn-table. The spring V maybe adjusted or regulated to any tension desired, according to the powerof the wind desired to be controlled.

As the wind increases beyond the power of the spring the wheel and thehead M turn to one side more or less, and the pitman 1) moves outward onthe curved rod 8, so that the motion will at all times be the same. Whenthe wind lulls the springV brings the head M and wheel N back into theirformer position.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

1. In a windmill, the combination of the base A B, forming the centralcup, 0, the turn-table EF, formed with overhanging flange, as shown, andprovided with the hollow center-pin or journal D, the horizontal rollersa in the cup 0 around said center-pin, and the beveled rollers b, havingconvex outer surfaces and placed on the rim of the base within theoverhanging flange of the turn-table, substantially as and for thepurposes herein set forth.

2. The combination, with the turn-table of a windmill, of the cup G, capH, with flange d, shaft I, with spindle f, inverted cup 6 and cup J, thecap L, with central spindle h and circular flange i, and the braces K,all constructed substantially as and for the purposes herein set forth.

3. In combination with the pitman or 0011 meeting-rod that is operatedfrom a wind-wheel shaft, a balanced lever provided with a curved rodpassing through the lower end of the pitman, and the pump-operating rodconnected to a stud on the lever, substantially as herein set forth.

4. In a windmill, the combination of the shaft I, the head M, carryingthe wind-wheel shaft, pitman 1), operated from said shaft, guide 0,balanced lever P, with curved rods, and the spring V, all constructedsubstantially as and for the purposes herein set forth.

5. The combination, in a windmill, of the balanced lever P, interposedbetween the windwheel pitman and the operating-rod, shaft 1?, withpulleys o o, oil-boxes R R, bands 10-20, and the pins or rollers it :10,all constructed substantially as and for the purposes herein set forth.

In testimony that I claim the foregoing I have hereunto set my hand this23d (lay of January, 1880.

ORSON (JOLVIN. Witnesses:

Guns. 0. HATCH, R. A. 1VIILLS.

